1. CORESTA Congress, Online, 2020, Smoke Science/Product Technology Groups, STPOST 13

    Analysis of menthol optical isomers in tobacco products

    SI Xiaoxi; ZHU Ruizhi; TANG Jianguo; MIAO Mingming; LIU Zhihua
    Yunnan Key Laboratory of Tobacco Chemistry, R&D Center of China Tobacco Yunnan Industrial Co., Ltd. of CNTC, No. 367, Hongjin Road, Kunming 650231, Yunnan, P.R. China
    Menthol can exist in four enantiomeric pairs, each of which has D-type and L-type separately. Different menthol isomers possess different sensory properties. The establishment of configuration analysis technology for the menthol isomer is of great...
  2. CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, STPOST 64

    Analysis of cylinder drying intensity on cut strips based on Enthalpy method

    LIU Ze(1); LU Duanfeng(2); LI Bin(2); ZHU Yong(1); TANG Jun(1); ZHOU Bing(1); FU Liang(1); YANG Qianxu(1); HE Banghua(1)
    (1) R&D Center, China Tobacco Yunnan Industrial Co., Ltd., Kunming, P.R. China; (2) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, P.R. China
    Cylinder drying of cut strips is one of the key technologies during the cigarette manufacturing process, which involves complex mass transfer and heat transfer phenomena. In order to study the actual cut strip heating and heat distribution in the...
  3. CORESTA Meeting, Agronomy/Phytopathology, 2017, Santa Cruz do Sul, APPOST 13

    Fungal diversity analysis of yellow sun-cured tobacco leaves during curing

    MI Qili; QIAN Yingying; ZHU Zhouhai; GUAN Ying; GAO Qian; CHEN Jianhua; XIE Lihua; LI Xuemei; YAO Jianhua
    Yunnan Industrial Co. Ltd of CNTC, Technology Center, Kunming 650106, P.R. China
    Yellow sun-cured tobacco is a Chinese tobacco species that has been cultivated for several hundred years in China. Due to the special quality traits, yellow sun-cured tobacco is of great potential for developing Chinese style cigarettes with unique...
  4. CORESTA Meeting, Smoke Science/Product Technology, 2017, Kitzbühel, STPOST 11

    Investigation of gene expression profile of cells after e-cigarette and cigarette smoke exposure

    TIAN Yongfeng; DUAN Yuanxing; ZHAO Wei; YANG Ji; ZHAO Yang; ZHU Donglai; ZHANG Xia; GONG Xiaowei; HONG Liu; MIAO Mingming; YANG Liu; CHEN Yongkuan
    China Tobacco Yunnan Industrial Co., Ltd of CNTC, Technical and Research Center, Yunnan, P.R. China
    To evaluate the cellular damage caused by e-cigarettes (e-cigs) and combustible cigarettes with respect to inflammatory expression, comparative analysis between two types of e-cigs and three types of combustible cigarettes were conducted. The aerosol...
  5. CORESTA Congress, Berlin, 2016, Smoke Science/Product Technology Groups, STPOST 11

    Quantitative discrimination of the flavour type of flue-cured tobacco and correlation between flavour type and planting area

    LI Chao(1); MIAO Mingming(1); QIN Yunhua(1); LI Exian(2); WU Yiqin(1); XU Yong(1); YANG Guangyu(1); ZHANG Chengming(1)
    (1) Cigarette Product Quality Inspection Institute, Technology Center, China Tobacco Yunnan Industrial Co., Ltd., Kunming, P.R. China; (2) Institute of Biotechnology and Genetic Resources, Yunnan Academy of Agricultural Sciences, Kunming, P.R. China
    To study the relationship between chemical composition and flavour type of flue-cured tobacco, 500 tobacco samples were collected from 29 areas in 14 Chinese provinces in 2012. A classical sampling method was applied. Following relevant methods...
  6. CORESTA Congress, Berlin, 2016, Smoke Science/Product Technology Groups, STPOST 28

    Determination of benzo[a]pyrene in smokers’ urine by online gel permeation chromatography–solid phase extraction–gas chromatography/mass spectrometry

    SI Xiaoxi; ZHU Ruizhi; LIU Zhihua; ZHANG Fengmei; LIU Chunbo; SHEN Qinpeng; HE Pei; MIAO Mingming; YANG Guangyu
    Key Laboratory of Tobacco Chemistry of Yunnan, R&D Center of China Tobacco Yunnan Industrial Co., Ltd., Kunming, P.R. China
    A new method for determining the benzo[a]pyrene (B[a]P) in samples of smokers’ urine was developed with an online gel permeation chromatography-solid phase extraction-gas chromatography/mass spectrometry (GPC-SPE-GC/MS) hyphenated system. Urine...
  7. TSRC, Tob. Sci. Res. Conf., 2016, 70, abstr. 16

    Development and evaluation of a benchtop walkaway platform for the automated solvent extractions of cambridge filter pads and agricultural tobacco samples

    LI Shijie(1); LIU Wei(1); COX J.(2); LU J.(2)
    (1) China Tobacco Yunnan Industrial Co., Ltd, Kunming, China; (2) Sirius Automation Inc., Buffalo Grove, IL, USA
    Several documented methodologies require liquid / solid extraction of smoking machine residues from standard size Cambridge filters. The efficiency and reproducibility of such solvent extractions is paramount for optimal results hence the need for...
  8. TSRC, Tob. Sci. Res. Conf., 2015, 69, abstr. 86

    Study on influence of processing strength on flue-cured tobacco leaf quality in the threshing and redrying process

    LONG Minghai(1); HUA Yikun(2); WANG Xianguo(2); LIN Nan(1); ZI Wenhua(1)
    (1) Yunnan Reascend Tobacco Technology (Group) Co. Ltd., Kunming, Yunnan, P.R. China; (2) Hongyun Honghe (Group) Co., Ltd., Kunming, Yunnan, P.R. China
    To improve the technological level of threshing and redrying and quality of products, the influences of processing strengths (steam moistening, steam mixing water moistening, slow redrying with low-temperature, high-temperature redrying) on the...
  9. CORESTA Congress, Sapporo, 2012, Agronomy/Phytopathology Groups, APPOST 12

    Biocontrol efficiencies and identification of nematicidal metabolite from strain BJLSH9 towards nematode and Phytophthora nicotianae

    DUAN Yan-qing(1); LI Ping(2); ZHE Wei(1); XI Jia-qin(3); XIA Jianjun(1); WANG Wenyuan(1); JIANG Junxiang(1); MO Ming-he(2)
    (1) Technology Center of Hongyun Honghe Tobacco (Group) Co., Ltd, Wuhua District, Kunming, P.R. China; (2) Key Laboratory for Conservation and Utilisation of Bio-Resources, Yunnan University, Kunming, P.R. China; (3) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, P.R. China
    BJLSH9, an actinomycete exhibiting both nematicidal and antifungal activities, was isolated from rhizospheric soil of willow in Beijing. Bioassay results in vivo showed that BJLSH9 displayed a 50.05% efficiency to suppress radial growth of...
  10. CORESTA Congress, Sapporo, 2012, Smoke Science/Product Technology Groups, SSPTPOST 27

    Preparation of dual functional mesoporous MCM-41 containing alkaline and transition metalgroups for selectively removing hydrogen cyanide from cigarette smoke

    NIE Cong(1); SUN Xuehui(1); WANG Mingfeng(2); ZHAO Le(1); JIANG Juxing(2); PENG Bin(1); WANG Yipeng(1); YANG Song(1)
    (1) Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou, Henan, P.R. China; (2) Hongyun Honghe Tobacco (Group) Co., Ltd, Kunming, P.R. China
    In this study, inorganic mesoporous MCM-4l was synthesised by hydrothermal synthesis and functionalised by both alkaline and transition metal groups. The structures of the obtained dual functional MCM-41 were characterised by XRD, elemental...